What it means
The root in words about pus, the thick fluid of white blood cells and dead tissue that forms at an infection. Pyuria is pus (white blood cells) in the urine, pyogenic means pus-forming, and empyema is pus in a body space such as the chest. Do not mix it up with pyel/oPY-uh-lohA word part that means the renal pelvis, the funnel-shaped space in the kidney where urine collects.Full entry (renal pelvis), as in pyelonephritis, or pyr/o (fire, fever), as in antipyretic.
At a glance
| Also written | pyo- |
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Easy to confuse with
pyel/o
A word part that means the renal pelvis, the funnel-shaped space in the kidney where urine collects.